Whenever they plow the MUPs around here they heavily salt them as well. Since these paths are in river valleys with numerous iron bridges, I've found that I've come out against any kind of winter maintanence. I'd rather detour until the snow is better packed than have bridges rust through (they are bad enough already) or have piles of rock salt in parks in the spring.
If they could stand to just plow them, that would be fine.